"T/ZZB 2293-2021 Low temperature rapid curing polyester powder coatings" standard specifies the technical requirements, performance indicators and test methods of low temperature rapid curing polyester powder coatings. This kind of Coatings can be quickly cured at lower temperatures, with good adhesion, weathering resistance and chemical resistance, suitable for painting of various substrates. The standard focuses on the composition of Coatings, curing time, film thickness, Appearance, Hardness, corrosion resistance and other key performances to ensure the effective application of Coatings in low temperature environments. Through the implementation of this standard, the construction efficiency of powder coatings under low temperature conditions can be improved, energy consumption can be reduced, and energy conservation and environmental protection needs can be met. It is widely used in home appliances, automobiles, construction and other industries.